JPS5978301A - Synthetic resin lens - Google Patents

Abstract

PURPOSE:To obtain a lens superior in abrasion resistance hy radically polymerizing a mixture of contg. a styrene type monomer, a specified cross-linkable monomer, and a UV absorber to obtain a lens base, and coating its surface with its surface with a hard coat layer contg. a specified silane compd. and a reflection preventive layer made of an inorganic substance in this order. CONSTITUTION:The lens base 1 is prepared by radically polymerizing a mixture contg. 9-80pts.wt. sytrene type monomer represented by formula I (X is halogen except F, or H; Y is halogen except F; and R is H or CH3; (m) is 1-5; and (n) is 0-3), 20-80pts.wt. cross-linkable monomer represented by formula II, and 0.01-1.0pt.wt. UV absorber, such as benzotriazole. On both surface of the less base 1 are formed a hard coat layer 2 contg. as an essential component a compd. represented by formula III (R' is an org. group having an epoxy group or gamma-methacryloxypropyl; R<2> is H or 1-4C org. group; Z is halogen except F, or alkoxy; and k+l is 0-2), and further, a polyfunctional epoxy compd. and a UV absorber having been hardened, and a reflection preventing layer 3 having SiO2 or ZrO2 or the like vapor deposited.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides, on the surface of a synthetic resin lens, which has a relatively high refractive index, a grown hard coat layer containing an ultraviolet absorber, and furthermore, a hard coat layer containing an ultraviolet absorber. This invention relates to a lens made of synthetic resin with a single layer or multi-layer anti-fouling material.

FM and Bakugo lenses have many advantages such as being lighter, having higher impact resistance, and being easier to work with than focal range glass lenses. However, on the other hand, the refractive index of general resin lenses μ is lower than that of glass, and it is also necessary to keep the center thickness r thick for strength reasons, so the overall thickness cannot be increased.
However, in recent years, resin lenses with a modern refractive index have been developed and are commercially available.As shown by the general formula LI], one or more monomers 79 to 1 to 80 parts by weight, , one or more single bodies i20 sword 1 and 80 represented by the general formula [11]
Lenses made of synthetic resin made by radical polymerization are also typical. However, the lens made of Fli, 5B, has carbon-halogen fragments in its structure.
Since it is easily separated by ps with light around υ11 m, it has the disadvantage of poor weather resistance. In addition, the 11 pieces of Metilef used as raw materials have poor weather resistance, and are subject to even greater damage due to the anti-corrosion coating. Therefore, in order to improve weather resistance, although there are 7 UV absorbers and 8 UV absorbers and 1 descendant, the effect near the surface is greater than 1, and the effect of the material at the outermost layer is PS +II! Yellowing caused by V-yu is unavoidable.

In addition, another disadvantage of the anti-grease lens is that it has poor scratch resistance.For this reason, there is a hard code layer on the lens surface. Table 1 Synthetic tree 1 Xinyi lens Q with strong determination to reduce rumination
In C and V, a hard coat layer mainly composed of silicon oxide is provided, and a single layer or multiple anti-fouling layers made of inorganic willow blades are applied thereon. This method μ,
Significant rumination prevention effect: achieved, but scratch resistance 1J
1.I have not yet obtained anything that can be said to be sufficient. Also, East 1
Since it is coated with a very thick hard coat layer, it also has the disadvantage that the shear resistance is extremely poor compared to before coating.

The present invention eliminates the disadvantages of sword 1).The purpose of the present invention is to make lightweight and thin Kaisei resin lenses that are excellent in weather resistance, scratch resistance, and impact resistance, have a large foul prevention effect, and are lightweight and thin. It is about providing.

That is, the present invention comprises 80 parts by weight of one or more monomers 79 and 12071 and 80 parts by weight of one or more monomers represented by the general formula [■] A mixed solution of monomers containing 80 parts by weight and ultraviolet absorber tα01〃1 and 1.0 parts by weight Toei was applied to the surface of the chemically radically polymerized synthetic resin lens base material. Excluding halogen, V, hydrogen, Yr
(B) One of the silane compounds represented by the general formula Lllll] A mixture of two or more substances τ is the main component, and this jL
A multifunctional epoxy compound and an ultraviolet absorber were added and cured to a thickness of 1 to 30 μm. k-1 (in the formula, H4μ epoxy end 'jf: 1-2 organic group or V
UT-methacryloxyglopyr M, R” is hydrogen or μ
an organic group having 1 to 4 carbon atoms; 2 is a fluorine or alkoxy group excluding fluorine; , no loss′
The thickness of the monolayer is 0.5 pm.
The following relates to a synthetic 1-4-shape lens in which the anti-fouling layer has a violet film with ridges and ridges.

The basic membrane configuration μ of the present invention is the same as in Figure 1,
On the plastic V-lens 1, there is provided a paid hard coat 2 containing an ultraviolet absorber, and a non-fouling prevention 111j 5 consisting of an unstainable V-lens.

The mixing ratio of the ultraviolet absorber used in the lens 1 made by Tsukiji on the Eisen side is the ratio stated in the claims, and the ratio claimed in the fundus lens is /S chronological r can be satisfied. When the composition ratio of monomer LIF is less than 9 fibers, the impact resistance of the lens decreases, and the
Heat resistance above part k is 1. Tamazuri workability is significantly reduced. When the composition ratio of monomer [1] is less than 20 parts by weight,
Contrary to the case of monomer LIE, the heat resistance and abrasive workability decrease, and when the temperature exceeds 80 degrees, the 1Av-resistance decreases, which characteristics are required for lenses? Unsatisfactory UV absorbers used in the synthetic resin lens 1 include benzotriazole, benzophenone, cyanoacrylate, and salicylate.

The surface hardness of the lens is 2μ, 2μ, 11μ, and at the same time, the lens base material is protected from light by the ultraviolet absorber, and the anti-reflection lens is made of inorganic material. In addition, the scratch resistance and weather resistance of the lens are improved overall.

As the organic hard coat 20 sets 1 coat, the general formula [1
[1] (In the formula, R' is an epoxy &, tM organic group or methacroyloxyethyl 4, R2 is hydrogen or a carbon number of 1
One of the organosilane compounds or a mixture on rI2I2? The main component is a polyfunctional Evoquin compound and a UV absorber.

Examples of the polyfunctional epoxy compound include polyolefin-based epoxy resins, cyclic epoxy resins such as 7-clopentadiene oxide, or polyglycidyl esters obtained from hexahydrophthalic acid and epichlorohydrin.
[Items include bisphenol A, catechol, resolnonol, phenol or μ (borine ethylene) / glycol, (polypropylene glycol, neopentyl glycol, glycerin, hexamethylene glycol, trimethylolpropane, pentaerythritol, Examples include polyglycidyl ethers obtained from glycerol, sorbitol and epichlorohydrin.

Examples of ultraviolet absorbers added to the organic hard coat layer include benzotriazole-based, benzophenone-based, cyanoacrylate-based, and salicylate-based.

If the film thickness is less than 1 μm, sufficient scratch resistance will not be obtained, and if it exceeds 30 μm'f, sufficient surface glass will not be obtained.

Foul prevention layer 3 is composed of a single layer or a layer of contradictory inorganic materials, and the inorganic material used is Sin.

Zr02, Ti04, Tat03, Ylo
g, '#b103, metal oxides such as Ag2O3, Si3N. There are metal nitrides such as, metal fluorides such as MrF, and metals such as Or, W, and Ta. inorganic layer
@ If a thick coating is applied to a synthetic resin lens, the impact resistance of the lens will be significantly reduced. In the invention, by keeping the inorganic film thickness to 0.5 μm or more, the impact resistance of the lens will be significantly reduced. It has r shares.

Hereinafter, two aspects of the present invention will be discussed based on examples.

Example 50 parts by weight of styrene, 3 parts by weight of 2,2-bis-3,5-dipromo-4-(2-methacryloyloxyethoxyphenyl)globan 4a, 1.5 parts by weight of t-butylperoxypivalate −
An organic hard coat made of a copolymer of 0.2 parts of hydroxy-5'-methylphenylrabenzotriazole and 7 parts of an ultraviolet absorber on the resin film! ＃k
Alms, and on top of that, sio, +, Zr02 top 5 101 anti-reflection 11! llk was established. The organic hard coat layer is made of tetramethoxysilane 290i
jdi, γ-glycidoxypropyltrimethoxysilane 8.

TL Sumirebe's 1,6-hexafushiol diglycidyl ether 104 heavy j# was made into a mixed solvent solution of 233 parts of methyl ethyl ketone and 100 Jt of acetic acid, and 0.05N hydrochloric acid. 188 parts of hydrolyzed bath liquid contains ultraviolet absorption i'? 11 as 7-(2'-hydroxy-5'-methylphenylnopenzotriazole 1.5
[Currently hardening] Adjust by adding 0.5 parts of stannous chloride as a solvent, apply to dipping, and apply to 150 parts.
Heat cured at ℃ for 2 hours. The film thickness of Hard-1-) is 5
It is 5 μm. In addition, one layer of the anti-separation layer was formed using a vacuum evaporation method, and its film thickness was 0.3 μm.

Sou, 9-11-2 Same as Example-1 except that the ultraviolet absorber 72 in the growing hard coat in Example-1 was changed to 2'-dihydroxy-4-methoxybenzophenone.

Example 5 The same procedure as 1l-1 was carried out except that the UV absorber in Example 1 was changed to ethyl-2-ahenyl 3/-diphenylacrylate.

Example Same as tμ 11-1, which was introduced in the ultraviolet 1d harvesting agent χP-tθrtbutylphenylza IJchiL/-) in the aged heart coat in Example-1.

Reference ψ Lee-1 Same as the production β-1 except for the ultraviolet absorber r in the paid hard coat in Example 91J'-1.

Reference column-2 Instead of the 71-toko-) + 4 in the implementation column-1, AltOB, SiO'l, ZrO2 sword) et al.
A blank node coat was applied by the vacuum evaporation 7# method.

The warpage film thickness is 2.2 μm.

Weather resistance test
Used and evaluated is wheat yellowing after 1000 hours on a fade meter? I was able to see it with the naked eye.

The durability rating was obtained by applying 1 coat to 100% of gUυ00 steel wool. -Glass'7A acrylic resin was graded as E' and t'F was graded on a scale of 10.

Impact resistance is determined by FDA standards q□fq V+-
It was judged as 1.

#fIlIIi Results are shown in Table-1.

Table 1 As described above, the present invention has the advantage of adding an ultraviolet absorber to a high refractive index synthetic #4 resin lens that has poor weather resistance and flight resistance. ＞The anti-fouling layer is easy to apply, provides excellent durability and scratch resistance, and
This is an epoch-making product that also improves impact resistance and reduces the foul rate.

[Brief explanation of drawings]

FIG. 1 μ is a basic membrane configuration diagram of the present invention. 1 is a synthetic resin lens, 2 is a coated hard coat containing an ultraviolet absorber, and 3 is a fouling prevention layer. that's all

Claims (1)

[Scope of Claims] (A) One or more J4 monomers t9 1 to 80 parts by mass represented by the general formula [1] and one or more monomers represented by the general formula [ll] 22° to 80° part and ultraviolet absorber τ0. (117) k et al. 1. [A mixture of monomers containing 11 parts by weight of radicals is applied to the surface of the maple resin lens base material, (wherein,
l'm Fluorine-based talent〈Halogen, R is water-based or methyl group, 01 is 1 to 1 to 5, n is Oto to 1 to 6, 7 expressions (E) General formula [111J indicates t ``L growth/A mixture of one or two or more orchid compounds is used as an ingredient, and this is combined with a polyfunctional epoxidized adjunct and a Yugai ray absorber.
t. (In the formula, R' is an epoxy base material.
Methacryloxypropyl group Hl is hydrogen or has 1 carbon number
〃・Ra4 shoulder base, Zμ fluorine, halogen or V:
I alkoxy group, k + l is an integer of 0) and 2? (C) Further, on the hard layer, a single layer or multiple anti-repulsion shields with a thickness of 05 μm or more are provided. made lens.